Unused arguments in nd6_nud_hint()

[Martin Pieuchot]

I'd like to remove unused/NULL arguments from nd6_nud_hint() in order to
get rid of a nd6_lookup().

Ok?

Index: netinet/tcp_input.c
===================================================================
RCS file: /cvs/src/sys/netinet/tcp_input.c,v
retrieving revision 1.293
diff -u -p -r1.293 tcp_input.c
--- netinet/tcp_input.c 16 Jun 2015 11:09:40 -0000      1.293
+++ netinet/tcp_input.c 8 Jul 2015 08:59:08 -0000
@@ -146,7 +146,7 @@ struct timeval tcp_ackdrop_ppslim_last;
 do { \
        if (tp && tp->t_inpcb && (tp->t_inpcb->inp_flags & INP_IPV6) && \
            tp->t_inpcb->inp_route6.ro_rt) { \
-               nd6_nud_hint(tp->t_inpcb->inp_route6.ro_rt, NULL, 0, \
+               nd6_nud_hint(tp->t_inpcb->inp_route6.ro_rt, \
                    tp->t_inpcb->inp_rtableid); \
        } \
 } while (0)
Index: netinet6/nd6.c
===================================================================
RCS file: /cvs/src/sys/netinet6/nd6.c,v
retrieving revision 1.139
diff -u -p -r1.139 nd6.c
--- netinet6/nd6.c      16 Jun 2015 11:09:40 -0000      1.139
+++ netinet6/nd6.c      8 Jul 2015 08:59:08 -0000
@@ -891,20 +891,12 @@ nd6_free(struct rtentry *rt, int gc)
  * XXX cost-effective methods?
  */
 void
-nd6_nud_hint(struct rtentry *rt, struct in6_addr *dst6, int force,
-    u_int rtableid)
+nd6_nud_hint(struct rtentry *rt, u_int rtableid)
 {
        struct llinfo_nd6 *ln;
 
-       /*
-        * If the caller specified "rt", use that.  Otherwise, resolve the
-        * routing table by supplied "dst6".
-        */
-       if (!rt) {
-               if (!dst6)
-                       return;
-               if (!(rt = nd6_lookup(dst6, 0, NULL, rtableid)))
-                       return;
+       if (rt == NULL) {
+               return;
        }
 
        if ((rt->rt_flags & RTF_GATEWAY) != 0 ||
@@ -923,11 +915,9 @@ nd6_nud_hint(struct rtentry *rt, struct 
         * if we get upper-layer reachability confirmation many times,
         * it is possible we have false information.
         */
-       if (!force) {
-               ln->ln_byhint++;
-               if (ln->ln_byhint > nd6_maxnudhint)
-                       return;
-       }
+       ln->ln_byhint++;
+       if (ln->ln_byhint > nd6_maxnudhint)
+               return;
 
        ln->ln_state = ND6_LLINFO_REACHABLE;
        if (!ND6_LLINFO_PERMANENT(ln)) {
Index: netinet6/nd6.h
===================================================================
RCS file: /cvs/src/sys/netinet6/nd6.h,v
retrieving revision 1.41
diff -u -p -r1.41 nd6.h
--- netinet6/nd6.h      20 Nov 2014 13:54:24 -0000      1.41
+++ netinet6/nd6.h      8 Jul 2015 08:59:08 -0000
@@ -276,7 +276,7 @@ void nd6_setmtu(struct ifnet *);
 void nd6_llinfo_settimer(struct llinfo_nd6 *, long);
 void nd6_timer(void *);
 void nd6_purge(struct ifnet *);
-void nd6_nud_hint(struct rtentry *, struct in6_addr *, int, u_int);
+void nd6_nud_hint(struct rtentry *, u_int);
 int nd6_resolve(struct ifnet *, struct rtentry *,
        struct mbuf *, struct sockaddr *, u_char *);
 void nd6_rtrequest(int, struct rtentry *);